CN2179908Y

CN2179908Y - High-efficient sand and air-preventing device for obtaining oil from wells

Info

Publication number: CN2179908Y
Application number: CN 93220357
Authority: CN
Inventors: 潘文良; 李顺才; 翟文广; 杨文军
Original assignee: DATONG PETROLEUM MACHINERY PLA
Current assignee: DATONG PETROLEUM MACHINERY PLA
Priority date: 1993-08-02
Filing date: 1993-08-02
Publication date: 1994-10-19
Anticipated expiration: 2003-08-02

Abstract

The utility model discloses a high-efficient sand and air-preventing device for exploiting oil under the well of an oil field. The high-efficient sand and air-preventing device for exploiting oil under the well of an oil field is characterized in that a plurality of vent holes are arranged on the helical vane of a core pipe, A fixing valve ball and a spring are combined to form the high-efficient sand and air-preventing device for exploiting oil under the well of an oil field. The high-efficient sand and air-preventing device for exploiting oil under the well of an oil field has the functions of sand prevention and air prevention, and thereby, the high-efficient sand and air-preventing device for exploiting oil under the well of an oil field has the function that pumping efficiency is enhanced 25-30%. The high-efficient sand and air-preventing device for exploiting oil under the well of an oil field is suitable for a common oil well, a sand containing oil well, and a serious corroded oil well.

Description

High-efficient sand and air-preventing device for obtaining oil from wells

The utility model relates to the anti-device of air of the efficient sand control of a kind of oil field down-hole oil production.

Existing sand anchor is to be enclosed within on the anti-sandpipe with wire lath, filter sand by it, because the continuous accumulation of sand and oil-sand mucus are stopped up the sand control effect that loses very soon with mesh, influence crude oil production, shorten the application life of oil well pump, frequent replacing sand anchor brings inconvenience for oil recovery workman and production management.

The purpose of this utility model be to avoid above-mentioned weak point of the prior art and provide that a kind of down-hole oil production is efficient, sand control, gas-tight and the matching used device of downhole pump.

The purpose of this utility model is achieved in that fluid is rotated down the centrifugal action that flows and produce by the helical blade on the core pipe, and the sand in the fluid sinks along the quick spiral of outer tube wall, and gas is sailed against the current along core tube wall and discharged by pore.During the oil well pump downstroke, the impact force of fluid is opened the standing valve ball, and sand is just fallen in the sand sediment pipe from the bottom, prevents that sand from entering in the fluid circularly again.During up stroke, under spring action, standing valve ball closure prevents that sand from entering.

Below in conjunction with drawings and Examples the utility model is further specified.

Accompanying drawing 1 and accompanying drawing 2 are constructional drawings of the efficient sand control gas-tight of down-hole oil production.Among the figure:

1. extension nipple; 2. exhaust joint; 3. backing-up screw; 4. spring washer; 5. helix core pipe; 6. outer tube; 7. sand flash valve joint; 8. sediment outflow valve body; 9. standing valve seat; 10. standing valve ball; 11. ball seat; 12. spring; 13. spring base; 14. nut M16; 15. adjustment screw; 16. tube connector; 17. sand control cap.

In accompanying drawing 1 and accompanying drawing 2 illustrated embodiments, extension nipple (1) links to each other with the standing valve seated connection head of oil well pump by tubing coupling, oil pipe, exhaust joint (2) is provided with the inclined hole of exhaust, fluid enters from the fuel feed hole of outer tube (6), helical blade through helix core pipe (5) is rotated down mobile, the sand of fluid sinks along the quick spiral of outer tube (6) inwall under action of centrifugal force, and gas is sailed against the current along the pore of helix core pipe (5) outer wall and helical blade and discharged by exhaust joint (2) inclined hole.During the oil well pump downstroke, the impact force of fluid is opened standing valve ball (10), and the sand just slotted hole from the sediment outflow valve body (8) is discharged, and falls in the connected sand sediment pipe by tube connector (16), prevents that sand from entering in the fluid circularly again.During up stroke, the fluid of process desanding exhaust enters from helix core pipe (5) bottom fuel feed hole, is extracted out by oil well pump.Simultaneously, spring (12) is standing valve ball (10) closure, prevents that sand from entering and make oil well pump frayed.The fastening helix core pipe of backing-up screw (3) (5).

This device has and improves pump efficiency 25-30%, and has improved the disposal ability of gas and sand, for the oil well of common oil well and seriously corroded obvious effects is arranged all.

Claims

1, the anti-device of air of the efficient sand control of a kind of oil field down-hole oil production, form by exhaust joint (2), backing-up screw (3), helix core pipe (5), sediment outflow valve body (8), standing valve seat (9), standing valve ball (10), spring (12) etc., it is characterized in that the vane on the helix core pipe (5) has steam vent and be equipped with standing valve ball (10) on spring (12).

2,, it is characterized in that helix core pipe (5) is fastening with backing-up screw (3) according to the anti-device of air of the efficient sand control of the described down-hole oil production of claim 1.